serves 6 Melt the butter in the cooker. Saute the leeks and onions, stirring frequently , until the onion is lightly browned, about 4 minutes. Stir in the potatoes, broccoli, corn, stock, salt, and half the parsley. Lock the lid in place and o ver high heat bring to high pressure. Adjust heat to maintain high pressure an d cook for 3 minutes. Reduce the pressure with a quick release method. Remove the lid, tilting it away from you to allow any e cess steam to escape. Stir i n the remaining parsley and milk. Adjust seasonings before serving.